you've been chased by something and then you end up like running away really, really slowly, or just cant move at all?
or how about a dream that you know is a dream and even maybe can control it? :O
i've had those happen a few times, but i dont usually remember my dreams too often though
or how about one where you float down the stairs? apparently evenones had that dream and its incredably scary, but im not too sure if i can remember having a dream like that